1 IMPROVED POUCH FIELD OF THE INVENTION The present invention relates to pouches of the type used with modular webbing systems, for example as used by soldiers and law enforcement officers. 5 BACKGROUND TO THE INVENTION Modular webbing systems such as the MOLLE (Modular Lightweight Load -carrying Equipment) system used by the United States Army have been in use for several years and have been adopted by armed forces and law enforcement personnel worldwide. The MOLLE system uses PALS (Pouch Attachment Ladder 10 System) webbing, in which horizontal rows of regularly spaced webbing stitched onto a garment (or panel of material for attachment to a garment) are used to secure pouches, rucksacks and other equipment-holders to the garment. For persons involved in combat or other life-threatening situations, it is critical to reduce the risk of detachment or snagging of any equipment being 15 carried, since any such adverse event could cause a fatal delay or loss of balance. The original MOLLE system, described in US 5,724,707, improved the attachment of pouches to body armour by allowing the straps of the pouches to be interwoven with horizontal rows of webbing on the body armour. This provided 20 for strong engagement of the pouch straps with the body armour whilst also being relatively convenient for installation or removal of the pouch. In US 5,724,707, after interweaving the strap with the rows of webbing, the strap is secured to the pouch by a metal press-stud. Metallic fasteners are disadvantageous for a number of reasons. Australian patent AU 2004100940 25 seeks to obviate these disadvantages by replacing the metal press-stud with a hook-and-pile fastener arrangement. A first portion of the hook-and-pile fastener is provided on the body of the pouch, whilst a second portion is provided on both surfaces of a free end of the strap. The first portion is then folded over so as to engage both surfaces. 30 Each of the pouches described above presents some snagging risk to the wearer. In US 5,724,707, the press-stud leaves a relatively large gap between the end of the strap and the body of the pouch. Similarly, in AU 2004100940, the folded region of the first portion of the hook-and-pile fastener tends to leave a 2 relatively large gap between the fastener and the pouch body. The presence of a gap increases the risk that the end of the strap will become snagged and being grabbed away from the garment to which the pouch is attached. Furthermore, with a flexible fastening arrangement such as that in AU 2004100940, a gap can 5 lead to the pouch bouncing (vibrating) against the wearer. This may present a significant problem if the pouch (or other equipment-holder such as a rucksack) contains a heavy load. Further, in each of these known arrangements, it is relatively easy to either completely disengage or reduce the amount of attachment of the strap to the 10 pouch. In view of the above, the present invention seeks to provide an improved pouch and pouch closure which substantially reduces the risk of snagging. SUMMARY OF THE INVENTION Accordingly, in a first aspect, the present invention provides a pouch for 15 use with a modular webbing system having a plurality of webbing rows, the pouch including a body and at least one strap having a closure end and extending from a first end of the body, the pouch further including a first tab extending from an edge of the body opposite the first end, the tab including a fastening surface for removably securing the first tab to the closure end of the strap on a surface facing 20 away from the pouch, wherein the first tab is secured to the edge of the body. By securing the tab to the very edge of the pouch body, the risk of a gap developing between the tab and the pouch, and hence the risk of snagging or vibration, is substantially eliminated. When the tab is secured to the closure end, the point at which it is folded may also be made to sit substantially flush with the 25 edge of the body. The pouch may further include a second tab extending from the body at the same location as the first tab, the second tab being removably securable to a pouch-facing surface of the closure end of the strap. In a second aspect, the invention provides a pouch for use with a modular 30 webbing system having a plurality of webbing rows, the pouch including a body and at least one strap having a closure end and extending from a first end of the body, the pouch further including a first tab and a second tab extending from an edge of the body opposite the first end, wherein the first tab includes a fastening 3 surface for removably securing the tab to the closure end of the strap on a surface facing away from the pouch, and the second tab is removably securable to a pouch-facing surface of the closure end of the strap. When a second tab is used, the strength of attachment is increased. If the 5 strap is pulled away from the pouch, the second tab will tend to move with the strap, reducing the possibility of the second tab becoming detached. In one embodiment, the body of the pouch has a seam at the edge, and the first tab (and, if applicable, the second tab) is fastened between the seam and the body, preferably by stitching. 10 In a particularly preferred embodiment, the strap includes a resilient spine along part of its length. Preferably, the resilient spine is a strip of a lightweight material, such as polycarbonate. Provision of a resilient spine on a flexible strap allows for the development of a kink or anchor point at the top end of the spine, serving as means for 15 positively locating the strap on one of the webbing rows. In a particularly preferred embodiment, the edge of the body has rounded corners. The edge may define a substantially continuous curve. Preferably, in this embodiment, the closure end of the strap has an edge which follows the substantially continuous curve. The first tab and, if present, the second tab may 20 also have a lower edge which follows the substantially continuous curve. Rounding of the corners further reduces the risk of snagging, for example when a person bearing the pouch is scaling a wall or a rock face. The fastening surface of the first tab may be a hook portion (or pile portion) of a hook-and-pile fastener, the corresponding pile portion (or hook portion) being 25 located on the closure end of the strap on the surface facing away from the pouch. If a second tab is present, it may similarly have a fastening surface which is a hook portion (or pile portion) of a hook-and-pile fastener, the corresponding pile portion (or hook portion) being located on the closure end of the strap on the pouch-facing surface. 30 According to a further aspect of the invention there is provided a pouch for use with a modular webbing system having a plurality of webbing rows, the pouch including a body and at least one strap having a closure end and extending from a first end of the body, the pouch further including a first tab extending from an 4 edge of the body opposite the first end, the tab including a fastening surface for removably securing the tab to the closure end of the strap on a surface facing away from the pouch, wherein the edge of the body has rounded corners. BRIEF DESCRIPTION OF THE DRAWINGS 5 Preferred embodiments of the invention will now be described with reference to the accompanying drawings, in which: Figure 1 shows a garment with which embodiments of the present invention may be used; Figures 2(a) to 2(d) show a pouch according to one embodiment of the 10 invention; Figures 3(a) to 3(d) show a modified version of the pouch of Figure 2; Figure 4 is a rear plan view of the pouch of Figure 2; Figure 5 is a cross-section through the line 5-5 of Figure 4; Figure 6 is a cross-section through the pouch of Figure 3; 15 Figure 7 is a rear plan view of a pouch according to another embodiment of the invention; Figure 8 is a cross-section through the line 8-8 of Figure 7; Figure 9 is a cross-section through a modified version of the pouch of Figure 7; and 20 Figure 10 shows a pouch according to a further embodiment of the invention. DESCRIPTION OF PREFERRED EMBODIMENT Referring initially to Figure 1, there is shown a vest 10 having a modular webbing system 11 including a plurality of webbing rows 12, 14. Rows 12, 14 are 25 regularly vertically spaced, and also include regularly spaced lines of vertical stitching, which divide each row into loops 13, 15 capable of receiving straps of a pouch, rucksack or other equipment-holder. In use, a strap is inserted at its free end into a loop 13 of row 12, threaded through a loop on the equipment-holder (not shown), and then threaded through loop 15 of row 14. For a sufficiently long 30 strap, it will be appreciated that further interweaving of the strap through loops 15 of rows 14 (and loops of the equipment-holder) is possible to achieve optimal interlocked attachment of the equipment-holder to the vest 10.
5 Referring now to Figure 2(a) and Figure 4, there is shown a pouch, in its unsecured configuration, suitable for use with the vest 10. Pouch 100 has a body 102 having a first (upper) end 104 and a (lower) edge 106 opposite the first end 104. A strap 110 having a closure end 112 is affixed to the first end 104 of body 5 102 by flag stitching 134. At edge 106, a tab 120 having a fastening surface 122, in this case a hook portion of a hook-and-pile fastener, is affixed by flag stitching 130. A lower row 132 of the flag stitch is located at or very close to the edge 106 of the body (Figure 4). The nearer the edge 106 that the lower row 132 is placed, the lesser the possibility of a gap developing between tab 122 and body 102. 10 Similarly, the top row 135 of flag stitch 134 is placed as close to the edge of first end 104 as possible. The affixation points 132, 135 are reinforced by bartacking. This strengthens the attachment and further reduces the risk of a gap developing between the tab 122 or strap 110 and body 102. In Figure 2(b), strap 110 has been folded over and passed through loop 13 15 of the top row 12 of webbing in Figure 1. In this position, it is seen that the closure end 112 has a surface 114 facing away from the pouch, the surface in this embodiment having a pile portion of a hook-and-pile fastener for securing to hook portion 122. A side view of the strap 110, as attached to pouch body 102, is shown in 20 Figure 2(c). The strap 110 includes a resilient spine in the form of a strip of polycarbonate 116. Preferably, the thickness of the spine is from about 0.75 mm to 0.85 mm. The top of the spine 116 sits approximately 25 mm below the top row 135 of the flag stitch. This distance corresponds to the height of webbing row 12, so that when the strap 110 is folded and passed through loop 13, a kink or step 25 tends to form in the strap 110, thus forming an anchor point for locating the strap on webbing 12. In Figure 2(d), the pouch 100 is shown in a configuration in which, after passing strap 110 through loop 13, the strap 110 is further passed through a loop 105 of webbing on the rear surface of the pouch. Loop 105 has a height 30 corresponding to the spacing between rows 12 and 14 of the webbing system 11. The strap is then passed through loop 15 of webbing row 14 so that an interlocking attachment is formed between the pouch and the webbing. Tab 120 6 is then folded at a point indicated by 124, and hook portion 122 brought into contact with pile portion 114 in order to complete the attachment of pouch to vest. In the attached configuration of Figure 2(d), the folded portion 124 of tab 120 sits flush with the lower edge 106 of the pouch, and there is substantially no 5 horizontal gap between the folded portion 124 and the pouch body 102. Turning now to Figure 3(a), an alternative embodiment of a pouch 200 is shown in which two tabs 220, 240 having fastening surfaces 222, 242 respectively are employed. The second tab 240 extends from substantially the same location as the first tab 220. The tabs 220, 240 are removably securable to 10 opposite surfaces 214, 215 respectively of the closure end 212 of strap 210. Similarly to Figure 2(a), the strap 210 is secured at a first end of the body 202 of the pouch by a flag stitch 234, preferably reinforced by bartacking. At the edge 206 of body 202, tabs 220, 240 are secured by flag stitch 230, which passes through both tabs 220, 240 and the rear surface of pouch body 202. The lower 15 row 232 of the flag stitch 230 is located at or very close to the edge 106 of the body (Figure 6). In use, the strap 210 is folded over (Figure 3(b)) and passed through a loop 13 of a webbing system 11, and is located on the loop 13 due to an anchor point formed by polycarbonate spine 216 (Figure 3(c)). The strap is then threaded 20 through webbing loop 205 of the pouch, and then through loop 15 of webbing system 11, to form an interlocking attachment as described above. Hook portion 242 of tab 240 is then brought into contact with pile portion 215 located on a pouch-facing surface of closure end 212 of the strap. Hook portion 222 of tab 220 is brought into contact with pile portion 214 on a surface of the closure end facing 25 away from the pouch, as shown in Figures 3(b) and 3(c). As shown in Figure 3(d), the point 224 at which the first tab 220 is folded is aligned with the lower edge 206 of the pouch 200. Referring now to Figures 7 to 9, there is shown an alternative method for attaching tabs to pouches according to embodiments of the invention. A pouch 30 400 having body 402 includes a seam 404 around its perimeter, and in particular, at its edge 406. The seam 404 is secured to the body 402 by two lines of stitching 407, 408. A tab 420 (Figures 7 and 8) or a pair of tabs 420, 440 (Figure 9) carrying the hook portion(s) 422 (442) of a hook-and-pile fastener is secured 7 between the seam 404 and the pouch body 402 by the two lines of stitching 407, 408. The outer row of stitching 407 is placed as close as possible to the edge 406, and the attachment reinforced by bartacking at least in the region spanned by the tab 420 (Figures 7 and 8) or pair of tabs 420 and 440 (Figure 9). 5 Referring now to Figure 10, there is shown a further embodiment of a pouch 500, including a pouch body 502, strap 510 and tab 520 which is shown secured to the closure end 512 of strap 510. The body 502 has a seam 504 secured by two rows of stitching 507, 508, and a loop of webbing 505 for assisting in forming an interlocking attachment between strap 505 and modular 10 webbing system 10 as described in relation to the embodiments above. As shown in Figure 10, the lower edge 506 of the pouch 500 has rounded corners 503. The edge 506 in this embodiment defines a substantially continuous curve, although it will be appreciated that in some other embodiments, the edge may also have a flattened portion intermediate the two comers 503. The closure 15 end of the strap has an edge (not shown) which follows the substantially continuous curve. The lower edge 521 of tab 520 has a shape which also follows the contour of the edge 506, so that a smooth lower surface free of snagging or grabbing points is formed when the tab 520 is secured to closure end 512 of strap 510. The risk of snagging is further reduced by placing the outer row 507 of 20 stitching as close to lower edge 506 of the pouch body 502 as possible. It will be apparent to the skilled person that many variations and modifications of the above embodiments are possible without departing from the spirit and scope of the invention, as defined by the claims appended hereto. For example, the pouch may contain more than one strap, each strap having an 25 accompanying tab or pair of tabs to which it is securable. The strap may be of extended length (if appropriate) so as to pass through more than two rows of a modular webbing system. The size of the pouch may vary considerably depending on the contents which it is designed to hold, and it will be appreciated that the number and length of straps attached to the pouch may vary accordingly. 30 Further, the roles of hook portions and pile portions of the hook-and-pile fasteners may be interchanged.